5B87:
reference: Catalytic Intermediate Crystal Structures of Cysteine Desulfurase from the Archaeon Thermococcus onnurineus NA1., Ho TH, Huynh KH, Nguyen DQ, Park H, Jung K, Sur B, Ahn YJ, Cha SS, Kang LW, Archaea. 2017 Apr 24;2017:5395293. doi: 10.1155/2017/5395293. eCollection 2017. PMID: 28536498

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).